/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.optimize.info;

import proguard.classfile.Clazz;

/**
 * This class stores some optimization information that can be attached to a class.
 *
 * @author Eric Lafortune
 */
public class ProgramClassOptimizationInfo extends ClassOptimizationInfo {
    private volatile boolean isInstantiated = false;
    private volatile boolean isInstanceofed = false;
    private volatile boolean isDotClassed = false;
    private volatile boolean isCaught = false;
    private volatile boolean isSimpleEnum = false;
    private volatile boolean isEscaping = false;
    private volatile boolean hasSideEffects = false;
    private volatile boolean containsPackageVisibleMembers = false;
    private volatile boolean invokesPackageVisibleMembers = false;
    private volatile boolean mayBeMerged = true;
    private volatile Clazz wrappedClass;
    private volatile Clazz targetClass;

    public boolean isKept() {
        return false;
    }

    public void setInstantiated() {
        isInstantiated = true;
    }

    public boolean isInstantiated() {
        return isInstantiated;
    }

    public void setInstanceofed() {
        isInstanceofed = true;
    }

    public boolean isInstanceofed() {
        return isInstanceofed;
    }

    public void setDotClassed() {
        isDotClassed = true;
    }

    public boolean isDotClassed() {
        return isDotClassed;
    }

    public void setCaught() {
        isCaught = true;
    }

    public boolean isCaught() {
        return isCaught;
    }

    public void setSimpleEnum(boolean simple) {
        isSimpleEnum = simple;
    }

    public boolean isSimpleEnum() {
        return isSimpleEnum;
    }

    public void setEscaping() {
        isEscaping = true;
    }

    public boolean isEscaping() {
        return isEscaping;
    }

    public void setSideEffects() {
        hasSideEffects = true;
    }

    public boolean hasSideEffects() {
        return !hasNoSideEffects && hasSideEffects;
    }

    public void setContainsPackageVisibleMembers() {
        containsPackageVisibleMembers = true;
    }

    public boolean containsPackageVisibleMembers() {
        return containsPackageVisibleMembers;
    }

    public void setInvokesPackageVisibleMembers() {
        invokesPackageVisibleMembers = true;
    }

    public boolean invokesPackageVisibleMembers() {
        return invokesPackageVisibleMembers;
    }

    public void setMayNotBeMerged() {
        mayBeMerged = false;
    }

    public boolean mayBeMerged() {
        return mayBeMerged;
    }

    public void setWrappedClass(Clazz wrappedClass) {
        this.wrappedClass = wrappedClass;
    }

    public Clazz getWrappedClass() {
        return wrappedClass;
    }

    public void setTargetClass(Clazz targetClass) {
        this.targetClass = targetClass;
    }

    public Clazz getTargetClass() {
        return targetClass;
    }

    public void merge(ClassOptimizationInfo other) {
        this.isInstantiated |= other.isInstantiated();
        this.isInstanceofed |= other.isInstanceofed();
        this.isDotClassed |= other.isDotClassed();
        this.isCaught |= other.isCaught();
        this.isSimpleEnum |= other.isSimpleEnum();
        this.isEscaping |= other.isEscaping();
        this.hasSideEffects |= other.hasSideEffects();
        this.containsPackageVisibleMembers |= other.containsPackageVisibleMembers();
        this.invokesPackageVisibleMembers |= other.invokesPackageVisibleMembers();
    }

    public static void setProgramClassOptimizationInfo(Clazz clazz) {
        clazz.setVisitorInfo(new ProgramClassOptimizationInfo());
    }

    public static ProgramClassOptimizationInfo getProgramClassOptimizationInfo(Clazz clazz) {
        return (ProgramClassOptimizationInfo)clazz.getVisitorInfo();
    }
}
